The entanglement purification for entangled multi-particle states
Ye Liu, Chunmei Yao, Guang‐Can Guo
We present two purification schemes for nonmaximally entangled states. We first show that two parties, Alice and Bob, start with shared less-entangled three-particle states to probabilistically produce a three-particle Greenberger–Horne–Zeilinger state by Bell state measurements and positve operator valued measure (POVM) or a unitary transformation. Then, by a straightforward generalization of the schemes, the purification of a multi-particle entangled state can be realized.
Journal of Optics B Quantum and Semiclassical Optics•Apr 18, 2002•3 citations